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For which one of the following processes, a wax pattern is required- centrifugal castinginvestment castingshell mouldinggravity die castingA fusible alloy used in brazing is known asfluxslagspelterbrazerSolder has the following composition lead and tintin and copperlead and copperlead and ironThermit welding is a mixture of When oxygen and acetylene gas are mixed in equal proportions, what type of flame is produced oxidising flamecarburizingneutral flamenoneWhich type of flame is produced by burning excessive acetylene neutral flamecarburizingoxidisingreducingIn the metal joining process joinedone metal to other metalone metal onlyboth of the abovenone of the aboveWhich process has a chemical reaction arc weldingresistance weldinggas weldingbeam weldingThe pattern cannot be reused in centrifugal castinginvestment castingshell castinggravity die castingSwell is the casting defect due to less rammingexcess rammingdry sandinadequate feedingA defect which can be caused due to the low strength of mold isblow holessand washpin holes |
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